Leonardo is known for his philanthropy and recently announced he is donating $15 million to charity.

The 40-year-old actor's self-titled foundation, which he founded in 1998 to fund efforts that protect the planet and endangered species, has pledged the generous sum to more than 30 environmental groups "implementing innovative and impactful conservation projects around the globe."

In a statement, the 'Wolf of Wall Street' star said: "The destruction of our planet continues at a pace we can no longer afford to ignore. We have a responsibility to innovate a future where the habitability of our planet does not come at the expense of those who inhabit it. I am proud to support these organisations who are working to solve humankind's greatest challenge."